11421628 has 24 divisors (see below), whose sum is σ = 20490624. Its totient is φ = 5569200.

The previous prime is 11421601. The next prime is 11421629. The reversal of 11421628 is 82612411.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37051 + ... + 37357.

It is an arithmetic number, because the mean of its divisors is an integer number (853776).

Almost surely, 2^11421628 is an apocalyptic number.

It is an amenable number.

11421628 is a deficient number, since it is larger than the sum of its proper divisors (9068996).

11421628 is a wasteful number, since it uses less digits than its factorization.

11421628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 511 counting only the distinct ones).

The product of its digits is 768, while the sum is 25.

The square root of 11421628 is about 3379.5899159513. The cubic root of 11421628 is about 225.2039500541.

It can be divided in two parts, 114216 and 28, that added together give a square (114244 = 338²).

The spelling of 11421628 in words is "eleven million, four hundred twenty-one thousand, six hundred twenty-eight".